/** Tests single frame lossless writing. */
public void testSingleFrameLossless() throws IOException {
if (!hasWriterForTransferSyntax(UID.JPEGLSLossless)) {
return;
}
String name = "ct-write";
DicomImageReader reader = createImageReader("/misc/ct.dcm");
BufferedImage bi = readRawBufferedImage(reader, 1);
DicomStreamMetaData newMeta = copyMeta(reader, UID.JPEGLSLossless);
ImageInputStream iis = writeImage(newMeta, bi, name);
DicomImageReader readerNew = createImageReader(iis);
BufferedImage biNew = readRawBufferedImage(readerNew, 1);
ImageDiff diff = new ImageDiff(bi, biNew, "target/" + name, 0);
assertEquals("Max Pixel Difference must be 0", 0, diff.getMaxDiff());
}
private void testColorMultiFrame(String name, String objectName, String transferSyntax)
throws IOException {
DicomImageReader reader = createImageReader(objectName);
DicomStreamMetaData copyMeta = copyMeta(reader, transferSyntax);
int numberOfFrames = copyMeta.getDicomObject().getInt(Tag.NumberOfFrames);
List<BufferedImage> bufferedImages = new ArrayList<BufferedImage>();
for (int frame = 1; frame <= numberOfFrames; frame++) {
BufferedImage biNew = readRawBufferedImage(reader, frame);
bufferedImages.add(biNew);
}
ImageInputStream inputStream = writeImageFrames(copyMeta, bufferedImages, name);
DicomImageReader readerNew = createImageReader(inputStream);
int frameNumber = 1;
for (BufferedImage bufferedImage : bufferedImages) {
BufferedImage biNew = readRawBufferedImage(readerNew, frameNumber++);
ImageDiff diff = new ImageDiff(bufferedImage, biNew, "target/" + name, 0);
assertTrue("Color Frame " + frameNumber + " is different", diff.getMaxDiff() == 0);
}
}
